/Engine/Source/Runtime/GameplayTags/Classes/GameplayTagsManager.h
Returns "GameplayTagFilter" meta property from given function, used for filtering by tag widget for any parameters of the function that end up as BP pins
[FString](API\Runtime\Core\Containers\FString) GetCategoriesMetaFromFunction ( const [UFunction](API\Runtime\CoreUObject\UObject\UFunction) * Func, [FName](API\Runtime\Core\UObject\FName) ParamName ) const